# NTSB investigations: Allison 250 series, 1984

NTSB aviation accident and incident investigations since 1962: the probable cause, findings, aircraft, crew, weather and docket of each, linked to the FAA registry and the FAA’s own reports.

## Latest cases

- [NTSB LAX85LA002](https://openairdocs.org/ntsb/LAX85LA002.md): Hiller UH-12E · Firebaugh, CA · Accident · Minor injuries · Limited investigation · Final report · Oct 5, 1984 · N161HA · Substantial damage
  > The acft collided with terrain while on an aerial application flt. The plt stated he, 'heard a loud bang' while spraying. Then the 'nose of the helicopter dove radically down', and he crashed into the field. Examination of the site revealed that one of the…
- [NTSB LAX84LA428](https://openairdocs.org/ntsb/LAX84LA428.md): Hiller UH-12ET · Delano, CA · Accident · Serious injuries · Limited investigation · Final report · Aug 4, 1984 · N5359V · Substantial damage
  > The Hiller UH-12 helicopter (with a soloy conversion) was on a spray run when the eng began losing power. The plt headed for an 'open spot in the trees', but all power was lost the acft collided with almond trees. Only 15 to 18 ozs of fuel were remaining in…
- [NTSB FTW84LA282](https://openairdocs.org/ntsb/FTW84LA282.md): Bell 47G-5A · Houma, LA · Accident · Minor injuries · Limited investigation · Final report · Jun 21, 1984 · N14807 · Substantial damage
  > The helicopter autorotated into trees and marsh land after a partial loss of power. The acft was on a pipeline patrol atlow alt at the time of the power loss. Examination of the engine after the accident revealed that the fuel control governor spring, p/n…
- [NTSB MIA84LA179](https://openairdocs.org/ntsb/MIA84LA179.md): Bell 47G-5 · Jupiter, FL · Accident · No injuries · Limited investigation · Final report · Jun 7, 1984 · N1201W · Substantial damage
  > The acft crashed landed after a partial loss of power. During an exam of the eng, the compressor bleed control valve was found stuck open causing an improper fuel/air mixture.
- [NTSB NYC84FGM04](https://openairdocs.org/ntsb/NYC84FGM04.md): Hiller UH-12E · Sigel, PA · Accident · No injuries · Final report · Jun 2, 1984 · N109EH · Substantial damage
  > The plt was on an aerial application flt over a wooded area. According to him, he had a tail rotor problem & it was necessary to extend his glide to reach an open area. Subsequently, the helicopter landed hard & the main rotor blades struck & severed the tail…

## The whole list in SQL

Runs in DuckDB 1.2 or later on the release's Parquet files over HTTPS:

```sql
SELECT c."ntsbNumber", c."eventDate", c."eventType", c."eventCity", c."eventStateOrRegion", a.n_number, a."aircraftMake", a."aircraftModel", c."highestInjuryLevel", c."totalFatal", c."completionStatus", c.report_url
FROM 'https://openairdocs.org/data/latest/ntsb_case_detail.parquet' c LEFT JOIN 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' a ON a.case_mkey = c."mKey" AND a.position = 1
WHERE year(c."eventDate") = 1984
  AND c."mKey" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.engine_model_code IN ('03014', '03019'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?engine=03014&year=1984

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